(19)

(11)

EP 4 441 438 A1

(12)

(43) Date of publication: 09.10.2024 Bulletin 2024/41 (21) Application number: 22846981.3 (22) Date of filing: 03.12.2022

(51) International Patent Classification (IPC):  F24F 5/00(2006.01) F24F 7/04(2006.01) F24F 7/02(2006.01) F24F 7/00(2021.01) E04B 1/00(2006.01) (52) Cooperative Patent Classification (CPC): F24F 5/0046; F24F 2005/0064; F24F 5/0089; F24F 7/00; F24F 2007/004; F24F 7/04; F24F 7/02; F24F 5/0021; Y02B 10/20 (86) International application number: PCT/US2022/051747 (87) International publication number: WO 2023/102246 (08.06.2023 Gazette 2023/23)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 02.12.2021 US 202163285397 P (71) Applicant: Greenberger, Hal P. Natick, MA 01760 (US)	(72) Inventor: Greenberger, Hal P. Natick, MA 01760 (US) (74) Representative: Engstle, Verena  Meissner Bolte Patentanwälte Rechtsanwälte Partnerschaft mbB Bankgasse 3 90402 Nürnberg 90402 Nürnberg (DE)